Envelop-machine.



W. E. SWIFT.v ENVELOP MACHINE.-

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w. E. SWW. ENV'ELOP MACHINE. A. APPLlCATWN HLED FEB.'12.1916.

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Patented Nov. 26, 1918.'

a citizen of tlie'United States,

narran sTAiTEs PATENT caricia WILLARD E. swIET, E WORCESTER, MASS ENVELOPE. COMPANY, OE sPaINGEIEL MAINE.

Speccation of Letters Eatent.

ACHUSETTS, AssIGNoR' To UNITED `STATES D, MASSACHUSETTS, A CORPORATION OF ENVELOPMACHINE.

, Patent-ea Nov; ac, wie.

Application led February 12, 1916. Serial No. 78,025.

To atl whom t may concern:

Be it known that I, IVILLARD E. SWIFT, residing at Worcester, in the county of Vorcesterandl Commonwealthv of Massachusetts, have invented a new and useful Improvement in Envel'op-Ivlachines, of which the following is a specification, accompanied by drawings forming a part of the same. v

My present invention relates particularly to improvements in envelop machines designed for the manufacture of what are known as window envelops, or envelops having an Opening in their face covered by a.

transparent patch, through -whichan ad- Adress upon an inclosure may be 'read, and

my present invention has to do with mecha- -nism for applying the transparent patch to cover the opening formed in the envelop blank, said mechanism being applied to and forming the component part of 'an envelop machine for gumming the flaps of the envelop blank and folding the blank to form the completed envelop. In the accompanying drawings I have shown so much `of an 'e envelop machine as is necessary to illustrate u the construction and operation ofthe -patch applying mechanism,` and its adaptation to an envelop making machine.

- Figure 1 represents a slde vlew Of-an envelop machine.

Fig. 2 is a'plan view.

Fig. 3 is a transverse sectional view on the plane ofthe broken line 3 3, Fig. 2, and showing upon alarger scale the patch applying mechanism.

Fig. 4 is a plan view of the patch applying mechanism shown upon the same scale as in Fig. 3.

VSimilar reference characters refer to similar parts in the different figures.

The mechanism for gumming the envelop blanks and for folding the blanks to form a completed envelop, are substantially the same as shown in the patent to IVilliam lD. Slater. No. 893,105,^issued July 14, 1908; both the gumming and Hap folding mechanism's being of a well known type in com-l mon use, a brief descriptionwill be su1'i`1.

cient.

In the accompanying drawings 1 represents the framework of the machine, 2 a' feeding table upon which a pile 'of envelop blanks is supported, said blanks having openings therein in proper position to disfor gumming the seal y a transparent the pile 3 to a position upon a lcreasing table 65 l0 beneath a vertically reciprocating plunger 11 which by its downward movement.` forces the blank through an Opening in the -creasing table 10 upon a folding bed where the flaps are folded byV hingedlfolders 12, 12.

The transfer of the blanks from the pile 3 to the folding mechanism isv accomplished by a reciprocating carriage 13 by which a period of dwell is given to the blank between the gumming-and folding mechanisms when 75 l the blank is directly over the pressing table 14. The construction and operation of the blank transferring mechanism. and pressing table are the same as that described in the aforesaidpatent to William D. Slater. During the period of dwell ofthe blank upon the l pressing table 14 itl is registered in proper position relatively to a patch applyingmechanism bymeans 3. The mechanismV for actuatingthe regis- .tering pins 15 is not herein shown or deof registering pinsl, Fig.

scribed in detail as it is the same as that described in the aforesaid patent to Slater and l forms no part of my present invention.

While the-blank is being held in proper-9o position upon the pressing' table 14 I apply patch to cover the opening in the -blank by mechanism which forms the subject of my present invention, and which is'shown upon a larger scale 1n Figs. 3 and 95 4 of the accompanying drawings.

Located at one sideof thepressing table 14 is a patch holder '16, consisting of a rectangular box open' at the top and bottom.

At the lower end the patch holder is 4pro- 5100i inwardly projecting toes 17, 17,

vided with which overlap the edges of the lowermost patch in the pile of patches 18 held in the patch holder.` Pressing upon the pile of patches is a follower 19 attached to the lower 4105 end of a spindle 20.` The follower 19 is pressed down upon the patches by means of a spiral spring 21, interposed between the follower and ja. frame 2Q. Immediately beneath the patch to the under side 60 holder 16 isa gum box v110 23 containing 'gum 24 in which is immersed a gumming die cally reciprocating spindle by a cam 27 on one of the driving shafts 28 of the nia-chine. The gumming die 25 is shaped in conformity with the opening in the envelop blank and is adapted by the vertical movement of the spindle 26 .to apply a narrow stripof gum upon the .under side of the lowermost patch held in the patch holder 16.

Attached `tothe fixed framework of the machine .is a narrow bar`29 which extends lengthwise and immediately beneath the patch holder 16. The gumming die A is notched at each of its ends to receivethe bar 29 and allow the face'of the die 25 to come into contact with the lowermost patch.

26 and actuated The bar 29 preventstheipatch from follow- 4ing the die as the latterv descends. The

patch holder is provided on opposite sides with projections 3Q which slide in grooves .y so

.tiedtogether at one The patch `holder 4which is engaged by a rack bar 43. .proper 31 in the parallel rails 32. rlhe rails 32 are end by a cross-piece 33 and at the opposite endr they are attached to va hub 34 which is journaled upon a stud 35 held in 'a bracket 36 projecting from the framework of the machine.

16 supports, by means of lugs 37- and bolts 38, a frame 22, from one end of which extends a rack bar 40 engaged by a gear 41 journaled on the stud 35. Attached to the gear- 41 is a pinion At the period a reciprocating. motion is given to the rack bar 43 by means of a cam 44 on the shaft 23. and a spring 45; By the action of the cain 44 and spring 45 the gear 41 is oscillated, thereby imparting a reciprocating motion tothe rack 40. The movement of4 the rack 40 gives a back and forth motion to th'epatch holder 16 in the rails 32, moving the patch holder from its position shown in Fig. 3 over the gum'box 23 to a position directly over the pressingtable 14. thereby bringing the patches in registration with the envelop blanks as they are brought to rest upon the pressing table.

lYhen the patch holder has been moved from the position shown in Fig. 3 to a position directly over the pressing table 14, a rocking motion is given to the rails 32 on the stud bymeans of an ai-m46 projecting from the hub 34 and pivotally connected by a link 4T with an actuating cam. not shown. The rockin'eV motion of the rails 32 lower the patch holder until the lowermost patch contained therein is brought into con- 'ing on the the rocking mot-ion of the tact with the envelop blank rest table 14. As rails 32 is reversed in Fig. 3, the lowermost patch with gum applied to its under surface is withdrawn b v its adhesion to the envelop blank out of engagement with the toes 17, leaving the 25, mounted upon ya vertidies 5 and'6 and transferred from inv pressing table` means for moving an en-' linto the position shown lowermost patch attached rto the envelop blank as the patch holder rises. The reciprocating motion of the rack bar 43 then oscillates the gear 41'to return the patch holder to its original position over the gum boX 23.

The patched blank is then carried forward by the hooks upon the'reciprocating carriage 13 to; vits position on, the creasing table 10.

The operation of the .machine is as follows :-The envelop blanks in the pile 3 are successively gummed by the flap gumming the pile 3 to a position on the table 14, by means of the carriage 13 in the usual and well known manner. At the next reciprocating motion of. the carriage another blank is carried forward from the pile 3 and the blank previously deposited upon the pressing table 14 is moved forward upon the creasing table 10. The blanks in `the pile 3 are therefore successively gummed and transferred to the pressing table 14 Aand from the pressing table 14 tothe creasing table 10. During the movements of the blanks gum is applied l in proper position upon the under side of the lowermost patch by the vertically reciprocating patch gumming die 25, and

while the blank remains at rest upon the vtableV 14 the patch holder is moved forward table 14 is represented at 48,1l`ig. 4, and the.

shape of the opening in the blank is shown at 49, Fig. 4.. The patch applied to the blank is represented at 50, Fig. 2.

, l claim,

1. In an envelop machine, a patch applying mechanism, comprising a pressing table. means for registering an envelop blank having 'anopefning thereinon said'table. a movable patch holder. means for applying gum to a patch contained in said holder. means for moving the patch holder to bring the patch above and into registration with the opening in the envelop blank on said table. and means for moving the patch holder to carry the gummed patch into contact with the envelop blank.

2. ln an envelop machine. a patch apply- "mechanism comprising a stationary velop blank having an opening therein upon said table. means at one side of said talne tor supporting a' patch to cover the opening inthe blank. 4means for registering the blank material to thepatch in said supporting on said table. means for applying adhesive Y means for registering the blank on the table yinterasse table, and means for bringing the patch and blank into contact.

In an envelop machine, a pressing table, means for moving an envelop blank by a horizontal movement on said table, a,

a transparent patch at movable holder for one side of said table,vnieans for applying adhesive material'to a patch insaid patch holder, means for moving the patch holder the mov'eby a movement transversely to mentof the blank, and means for said patch holder contactfwith the table.

4. In an envelop machine, a stationary pressing table, means for moving a blank upon said table by a horizontal movement` depressing blank on said pressing a movable patch holder for a stack of patches,'with the under surface of the lower- Inost patch in the stack exposed, meansfor applying adhesive material tothe Iexposed surface of the lowermost patch in said holder, means for moving the patch holder over the pressingtable, and mea-ns for depressing the patch holder to carry the gummed patch into contact witl -the blank on said-table.

5. In an envelop machine, means forl supporting an envelop blank having an opening 35 holder for a therein in a stationary position, a movable stack of transparent patches, located at one sidefof said blank support, means for applying gum tothe lowermost patch in the stack, a stationary bar beneath the stack of patches to prevent the Withdrawal of'a. patch from the patch holder, means for moving the patch holdervolf -said bar and over theenvelop blank on said supporting means, and means for depressing the patch holder to carry a patch into contact with the envelop blank. y

6. In an envelop machine, means for snpporting an envelop blank, a movable patch holder located at oneside of said blank snpport for holding a stack of patches, a gum box beneath said patch holder, a vertically reciprocating gumming' die for transferring gum from said gum box to the lowermost patch in the stack, and means for moving the patch holder to carry the gummed patch into contact with the blank.

7. In an envelop machine, a movable patch liolder,l horizontal ways foi said holderpivotally supported at one end, means for imparting a reciprocating movement to said holder along said ways, and means for gumming a patch in said holder patch in a linev to bring the patch intopatches, means p for the gnmmed patch when said holder is at one end of its movement, and means for rock-ing said ways Aon their pivotal support when the patch holder p is at the opposite 'end of its movement.

8. In an envelop machine, means for gumming an envelop blank having an opening therein, means for folding the blank, means for transferring the blank from the giimmiiig to the folding mechanism, with a period of dwell, and means for applying a patch to cover the opening in the blank during its period of dwell, comprising a movable patch holder for holding a stack of patches located at one side of the path of the blank, means-.for applying' gum to the lowermost patch in said holder, and means for moving said patch holderv toapply the gunimed patch to the blank.

' In an envelop machine, means for guniining an envelop blank liaviiigan open-l 'ing therein, means for folding the' blank, means for transferring the blank from ,the guniining to the folding mechanism, with a period of dwell, and-means for applying a patch to cover the opening in the blank during its period of dwell, comprising a movable patch holder for holding a stack of applying gum' to the lowermost patch' in said patch holder` and means for moving said holder to apply the i gumlnied patch to cover the opening in the lan r.

10. In a machine ofthe class described, a patch applying mechanism opening in an envelop blank, comprising a movable patch holder for holding a stack of patches, having the under side of the lowermost patch exposed, Ameans for applying gum vto the lowermost patch in the stack in said holder, means for retaining the patch during the .operation of gumming, and means for moving said patcltholder to carry into contact with theenvelop blank.

for covering the ll. In a mechanism for applying a patch to cover an opening in an 'envelop blank, means for supporting the blank, means for registering the blank on said support, ya hollow movable patch stack of patches, a follower inclosed in said patch holder, and means for moving said patch holder from a position at one side Aot' the blank support to a position over said blank support,v and means for depressing said patch holder to carryapatch into contact with the'blank. p

Dated this ninth day of February 1916.

VILLARD E. SWIFT.

W'itnesses:

PnNnLoPi-e COMBERBACK, NELLIE IVILALEN.

Iholder for holding a' 

